mirror of
https://github.com/rn10950/RetroZilla.git
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349 lines
14 KiB
C++
349 lines
14 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is mozilla.org code.
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*
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* The Initial Developer of the Original Code is
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* Netscape Communications Corporation.
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* Portions created by the Initial Developer are Copyright (C) 1998
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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* Dean Tessman <dean_tessman@hotmail.com>
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* Mats Palmgren <mats.palmgren@bredband.net>
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either of the GNU General Public License Version 2 or later (the "GPL"),
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* or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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#ifndef nsComboboxControlFrame_h___
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#define nsComboboxControlFrame_h___
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#ifdef DEBUG_evaughan
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//#define DEBUG_rods
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#endif
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#ifdef DEBUG_rods
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//#define DO_REFLOW_DEBUG
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//#define DO_REFLOW_COUNTER
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//#define DO_UNCONSTRAINED_CHECK
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//#define DO_PIXELS
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//#define DO_NEW_REFLOW
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#endif
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//Mark used to indicate when onchange has been fired for current combobox item
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#define NS_SKIP_NOTIFY_INDEX -2
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#include "nsAreaFrame.h"
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#include "nsIFormControlFrame.h"
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#include "nsIComboboxControlFrame.h"
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#include "nsVoidArray.h"
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#include "nsIAnonymousContentCreator.h"
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#include "nsISelectControlFrame.h"
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#include "nsIRollupListener.h"
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#include "nsPresState.h"
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#include "nsCSSFrameConstructor.h"
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#include "nsITextContent.h"
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#include "nsIScrollableViewProvider.h"
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#include "nsIStatefulFrame.h"
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#include "nsIDOMMouseListener.h"
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class nsIView;
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class nsStyleContext;
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class nsIListControlFrame;
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class nsIScrollableView;
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/**
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* Child list name indices
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* @see #GetAdditionalChildListName()
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*/
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#define NS_COMBO_FRAME_POPUP_LIST_INDEX (NS_BLOCK_FRAME_ABSOLUTE_LIST_INDEX + 1)
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class nsComboboxControlFrame : public nsAreaFrame,
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public nsIFormControlFrame,
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public nsIComboboxControlFrame,
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public nsIAnonymousContentCreator,
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public nsISelectControlFrame,
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public nsIRollupListener,
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public nsIScrollableViewProvider,
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public nsIStatefulFrame
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{
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public:
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friend nsresult NS_NewComboboxControlFrame(nsIPresShell* aPresShell, nsIFrame** aNewFrame, PRUint32 aFlags);
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friend class RedisplayTextEvent;
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nsComboboxControlFrame();
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~nsComboboxControlFrame();
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// nsISupports
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NS_IMETHOD QueryInterface(const nsIID& aIID, void** aInstancePtr);
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// nsIAnonymousContentCreator
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NS_IMETHOD CreateAnonymousContent(nsPresContext* aPresContext,
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nsISupportsArray& aChildList);
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NS_IMETHOD CreateFrameFor(nsPresContext* aPresContext,
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nsIContent * aContent,
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nsIFrame** aFrame);
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#ifdef ACCESSIBILITY
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NS_IMETHOD GetAccessible(nsIAccessible** aAccessible);
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#endif
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// nsIFrame
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NS_IMETHOD Init(nsPresContext* aPresContext,
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nsIContent* aContent,
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nsIFrame* aParent,
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nsStyleContext* aContext,
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nsIFrame* aPrevInFlow);
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NS_IMETHOD Reflow(nsPresContext* aCX,
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nsHTMLReflowMetrics& aDesiredSize,
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const nsHTMLReflowState& aReflowState,
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nsReflowStatus& aStatus);
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NS_IMETHOD HandleEvent(nsPresContext* aPresContext,
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nsGUIEvent* aEvent,
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nsEventStatus* aEventStatus);
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NS_IMETHOD Paint(nsPresContext* aPresContext,
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nsIRenderingContext& aRenderingContext,
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const nsRect& aDirtyRect,
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nsFramePaintLayer aWhichLayer,
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PRUint32 aFlags = 0);
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#ifdef NS_DEBUG
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NS_IMETHOD GetFrameName(nsAString& aResult) const;
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#endif
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NS_IMETHOD Destroy(nsPresContext* aPresContext);
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virtual nsIFrame* GetFirstChild(nsIAtom* aListName) const;
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NS_IMETHOD SetInitialChildList(nsPresContext* aPresContext,
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nsIAtom* aListName,
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nsIFrame* aChildList);
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virtual nsIAtom* GetAdditionalChildListName(PRInt32 aIndex) const;
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NS_IMETHOD GetFrameForPoint(const nsPoint& aPoint, nsFramePaintLayer aWhichLayer, nsIFrame** aFrame);
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virtual nsIFrame* GetContentInsertionFrame();
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// nsIFormControlFrame
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NS_IMETHOD SetSuggestedSize(nscoord aWidth, nscoord aHeight);
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NS_IMETHOD GetName(nsAString* aName);
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NS_IMETHOD_(PRInt32) GetFormControlType() const;
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NS_IMETHOD SetProperty(nsPresContext* aPresContext, nsIAtom* aName, const nsAString& aValue);
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NS_IMETHOD GetProperty(nsIAtom* aName, nsAString& aValue);
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/**
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* Inform the control that it got (or lost) focus.
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* If it lost focus, the dropdown menu will be rolled up if needed,
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* and FireOnChange() will be called.
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* @param aOn PR_TRUE if got focus, PR_FALSE if lost focus.
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* @param aRepaint if PR_TRUE then force repaint (NOTE: we always force repaint currently)
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* @note This method might destroy |this|.
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*/
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void SetFocus(PRBool aOn, PRBool aRepaint);
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void ScrollIntoView(nsPresContext* aPresContext);
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virtual void InitializeControl(nsPresContext* aPresContext);
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NS_IMETHOD OnContentReset();
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NS_IMETHOD GetFormContent(nsIContent*& aContent) const;
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virtual nscoord GetVerticalBorderWidth(float aPixToTwip) const;
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virtual nscoord GetHorizontalBorderWidth(float aPixToTwip) const;
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virtual nscoord GetVerticalInsidePadding(nsPresContext* aPresContext,
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float aPixToTwip,
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nscoord aInnerHeight) const;
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virtual nscoord GetHorizontalInsidePadding(nsPresContext* aPresContext,
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float aPixToTwip,
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nscoord aInnerWidth,
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nscoord aCharWidth) const;
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//nsIComboboxControlFrame
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NS_IMETHOD IsDroppedDown(PRBool * aDoDropDown) { *aDoDropDown = mDroppedDown; return NS_OK; }
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/**
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* @note This method might destroy |this|.
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*/
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NS_IMETHOD ShowDropDown(PRBool aDoDropDown);
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NS_IMETHOD GetDropDown(nsIFrame** aDropDownFrame);
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NS_IMETHOD SetDropDown(nsIFrame* aDropDownFrame);
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/**
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* @note This method might destroy |this|.
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*/
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NS_IMETHOD RollupFromList(nsPresContext* aPresContext);
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NS_IMETHOD AbsolutelyPositionDropDown();
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NS_IMETHOD GetAbsoluteRect(nsRect* aRect);
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NS_IMETHOD GetIndexOfDisplayArea(PRInt32* aSelectedIndex);
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NS_IMETHOD RedisplaySelectedText();
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NS_IMETHOD_(PRInt32) UpdateRecentIndex(PRInt32 aIndex);
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// nsISelectControlFrame
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NS_IMETHOD AddOption(nsPresContext* aPresContext, PRInt32 index);
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NS_IMETHOD RemoveOption(nsPresContext* aPresContext, PRInt32 index);
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NS_IMETHOD GetOptionSelected(PRInt32 aIndex, PRBool* aValue);
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NS_IMETHOD DoneAddingChildren(PRBool aIsDone);
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NS_IMETHOD OnOptionSelected(nsPresContext* aPresContext,
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PRInt32 aIndex,
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PRBool aSelected);
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NS_IMETHOD GetDummyFrame(nsIFrame** aFrame);
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NS_IMETHOD SetDummyFrame(nsIFrame* aFrame);
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NS_IMETHOD OnSetSelectedIndex(PRInt32 aOldIndex, PRInt32 aNewIndex);
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//nsIRollupListener
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/**
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* Hide the dropdown menu and stop capturing mouse events.
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* @note This method might destroy |this|.
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*/
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NS_IMETHOD Rollup();
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/**
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* A combobox should roll up if a mousewheel event happens outside of
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* the popup area.
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*/
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NS_IMETHOD ShouldRollupOnMouseWheelEvent(PRBool *aShouldRollup)
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{ *aShouldRollup = PR_TRUE; return NS_OK;}
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/**
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* A combobox should not roll up if activated by a mouse activate message
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* (eg. X-mouse).
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*/
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NS_IMETHOD ShouldRollupOnMouseActivate(PRBool *aShouldRollup)
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{ *aShouldRollup = PR_FALSE; return NS_OK;}
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// nsIScrollableViewProvider
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virtual nsIScrollableView* GetScrollableView();
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//nsIStatefulFrame
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NS_IMETHOD SaveState(nsPresContext* aPresContext, nsPresState** aState);
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NS_IMETHOD RestoreState(nsPresContext* aPresContext, nsPresState* aState);
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static PRBool ToolkitHasNativePopup();
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protected:
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NS_IMETHOD CreateDisplayFrame(nsPresContext* aPresContext);
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#ifdef DO_NEW_REFLOW
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NS_IMETHOD ReflowItems(nsPresContext* aPresContext,
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const nsHTMLReflowState& aReflowState,
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nsHTMLReflowMetrics& aDesiredSize);
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#endif
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// nsHTMLContainerFrame
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virtual PRIntn GetSkipSides() const;
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// Utilities
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nsresult ReflowComboChildFrame(nsIFrame* aFrame,
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nsPresContext* aPresContext,
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nsHTMLReflowMetrics& aDesiredSize,
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const nsHTMLReflowState& aReflowState,
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nsReflowStatus& aStatus,
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nscoord aAvailableWidth,
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nscoord aAvailableHeight);
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public:
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nsresult PositionDropdown(nsPresContext* aPresContext,
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nscoord aHeight,
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nsRect aAbsoluteTwipsRect,
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nsRect aAbsolutePixelRect);
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protected:
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/**
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* Show or hide the dropdown list.
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* @note This method might destroy |this|.
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*/
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void ShowPopup(PRBool aShowPopup);
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/**
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* Show or hide the dropdown list.
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* @param aShowList PR_TRUE to show, PR_FALSE to hide the dropdown.
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* @note This method might destroy |this|.
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* @return PR_FALSE if this frame is destroyed, PR_TRUE if still alive.
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*/
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PRBool ShowList(nsPresContext* aPresContext, PRBool aShowList);
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void SetChildFrameSize(nsIFrame* aFrame, nscoord aWidth, nscoord aHeight);
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void CheckFireOnChange();
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void FireValueChangeEvent();
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nsresult RedisplayText(PRInt32 aIndex);
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void HandleRedisplayTextEvent();
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void ActuallyDisplayText(PRBool aNotify);
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nsresult GetPrimaryComboFrame(nsPresContext* aPresContext, nsIContent* aContent, nsIFrame** aFrame);
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void ReflowCombobox(nsPresContext * aPresContext,
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const nsHTMLReflowState& aReflowState,
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nsHTMLReflowMetrics& aDesiredSize,
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nsReflowStatus& aStatus,
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nsIFrame * aDisplayFrame,
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nsIFrame * aDropDownBtn,
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nscoord& aDisplayWidth,
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nscoord aBtnWidth,
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const nsMargin& aBorderPadding,
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nscoord aFallBackHgt = -1,
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PRBool aCheckHeight = PR_FALSE);
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nsFrameList mPopupFrames; // additional named child list
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nsPresContext* mPresContext; // XXX: Remove the need to cache the pres context.
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nsCOMPtr<nsITextContent> mDisplayContent; // Anonymous content used to display the current selection
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nsIFrame* mDisplayFrame; // frame to display selection
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nsIFrame* mButtonFrame; // button frame
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nsIFrame* mDropdownFrame; // dropdown list frame
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nsIFrame* mTextFrame; // display area frame
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nsIListControlFrame * mListControlFrame; // ListControl Interface for the dropdown frame
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// Resize Reflow Optimization
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nsSize mCacheSize;
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nsSize mCachedAvailableSize;
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nscoord mCachedMaxElementWidth;
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nscoord mCachedAscent;
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nsSize mCachedUncDropdownSize;
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nsSize mCachedUncComboSize;
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nscoord mItemDisplayWidth;
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//nscoord mItemDisplayHeight;
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PRPackedBool mDroppedDown; // Current state of the dropdown list, PR_TRUE is dropped down
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PRPackedBool mGoodToGo;
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PRPackedBool mInRedisplayText;
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PRPackedBool mRedisplayTextEventPosted;
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PRInt32 mRecentSelectedIndex;
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PRInt32 mDisplayedIndex;
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nsString mDisplayedOptionText;
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// make someone to listen to the button. If its programmatically pressed by someone like Accessibility
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// then open or close the combo box.
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nsCOMPtr<nsIDOMMouseListener> mButtonListener;
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nsCOMPtr<nsIEventQueueService> mEventQueueService;
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// static class data member for Bug 32920
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// only one control can be focused at a time
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static nsComboboxControlFrame * mFocused;
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#ifdef DO_REFLOW_COUNTER
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PRInt32 mReflowId;
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#endif
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private:
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NS_IMETHOD_(nsrefcnt) AddRef() { return NS_OK; }
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NS_IMETHOD_(nsrefcnt) Release() { return NS_OK; }
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};
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#endif
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